For many parents, if their child asks to be something for Halloween — no matter how ambitious or random — they will figure out a way to make it happen. Although some moms and dads tire of their kids wanting to dress up as a princess or superhero year after year, other parents are left dumbfounded by their child's out-of-the-box request. From the kids who appreciate potty humor and dream of going as a fart, butt, or poop, to the little ones who find inspiration in a flat tire or a cement mixer, some children give their parents more of a challenge. These 30 real parents shared the most unusual (and very serious!) costume requests they've had to field from their creative little ones.